Table 5.

Results of multivariable Cox proportional hazards regression analysis*

Variable	OR (95% CI)	P-value
Insurance type
Private	Ref	Ref
Medicare	1.11 (1.09–1.16)	<0.001
Uninsured	1.06 (1.001–1.13)	0.048
Medicaid	1.10 (1.05–1.16)	<0.001
Treatment type
Surgery-radiation-chemotherapy	Ref	Ref
Surgery alone	1.89 (1.83–1.95)	<0.001
Surgery and radiation	1.60 (1.54–1.68)	<0.001
Surgery and chemotherapy	1.24 (1.16–1.32)	<0.001

*Adjusting for age, sex, race, distance, traveled, Charlson comorbidity index, region, and type of facility.

Bold denotes statistical significance.